Is there a junk yard solution for rear disk conversion on a drum Dana 44? I have a buddy with a TJ w/44 who is also interested. Everybody would like disc all the way around especially if it was junk yard available.

If you want a bolt on caliper bracket TSM Mfg Co out of Castle Rock CO makes a bolt on bracket for the D44.
As Bill noted in his writeup an MC change will probably be in order.
I went with yj pb booster and an MC from a mercury grand marque (sp)
It puts the break lines on the engine side of the MC so it will be close to the TBI intake. A better choice would probably be the cj booster with the Corvette mc which will keep the lines on thier stock side.
I had to tweak the stock cj ebrake setup at the load balancer (not the right term)
where the 1 line splits into the left and right line. It would want to put more tension on one side than the other. I put in a piece of round stock for the balancer to pivot on and it has seamed to work well.